Q54.If the sum of first 11 terms of an A.P. , a1, a2, a3 … … is 0(a1 ≠0) then the sum of the A.P a1, a3, a5, … . . a23 is ka1 where k is equal to (1) −12110 (2) 12110 (3) 725 (4) −725
What This Question Tests
This question tests the understanding of the sum of an arithmetic progression and the properties of its terms, requiring the calculation of the sum of a subsequence of an AP given the sum of its initial terms.
Concepts Tested
Formulas Used
Sn = n/2 * (2a + (n-1)d)
📚 NCERT Sections This Tests
2.1 — Two Charges 5 × 10–8 C And –3 × 10–8 C Are Located 16 Cm Apart. At
Physics Class 11 · Chapter 2
2.1 Two charges 5 × 10–8 C and –3 × 10–8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
2.5 — A Parallel Plate Capacitor With Air Between The Plates Has A
Physics Class 11 · Chapter 2
2.5 A parallel plate capacitor with air between the plates has a capacitance of 8 pF (1pF = 10–12 F). What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6?
2.2 — A Regular Hexagon Of Side 10 Cm Has A Charge 5 Mc At Each Of Its
Physics Class 11 · Chapter 2
2.2 A regular hexagon of side 10 cm has a charge 5 mC at each of its vertices. Calculate the potential at the centre of the hexagon.
📋 Question Details
- Chapter
- Sequences & Series
- Topic
- Arithmetic Progression (AP)
- Year
- 2020
- Shift
- 02 Sep Shift 2
- Q Number
- Q54
- Type
- MCQ
- NCERT Ref
- Class 11 Maths Ch 9: Sequences and Series
More from this Chapter
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